On-board communication apparatus, on-board communication system, communication processing apparatus, and communication method

Abstract

An on-board communication apparatus includes an application processing unit and a communication processing unit that includes: a first communication unit that performs communication with a first communication protocol; one or more second communication units that perform communication with a second communication protocol that is different from the first communication protocol; a generation unit that generates relay data including first data received by the first communication unit and second data received by the second communication units; and a relay unit that transmits the generated relay data to the application processing unit, wherein the generation unit: compiles multiple pieces of first data received by the first communication unit and adds first additional information thereto; adds second additional information to each piece of second data received by the second communication units; and generates the relay data, in which first data and second data each having additional information added are compiled.